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SMTP Addreses from Outlook (C#)

This is C# WinForm code that demonstrates using Outlook (requires a third-party COM product called Redemption) to get at the SMTP addresses from the outlook address book. It takes about 60 minutes to output a file, also attached, of ~160k users and their SMTP address, but it shows the basics of the process. This is not likely appropriate for server use. Below is the code, but an easier solution might simply be for the code sending the email to iterate through the list and send an email to each person, and record failure for any particular address

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